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Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 31, 2017	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Jan. 01, 2017
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				$ 58
Amortization expense		$ 251	$ 237	740	$ 732
Goodwill		15,146		15,146		$ 15,408
KVH Media Group
Finite-Lived Intangible Assets [Line Items]
Goodwill		10,744		10,744
Other intangible assets		$ 4,138		$ 4,138
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives				7 years
Headland Media Limited | Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives				10 years
Headland Media Limited | Distribution rights
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives				15 years
Q1 2017 Acquisition
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				$ 329
Contingent consideration, value, high							$ 114
Q1 2017 Acquisition | Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives	10 years
Finite-lived intangible assets acquired	$ 100

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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